Task description

[ldibanyez]

Use Case name Description of a Crowdsourcing task
Stakeholders: Task initiator and task replicator

Description:
In order to replicate crowdsourcing tasks, Crowd-voc needs to provide the means to describe them. We understand tasks as the sequence of actions that a number of single human contributor is asked to perform to produce a judgement or annotation.
A single contributor can be asked to do several different actions, for example, if shown an image, a first action can be "Identify if there is cat in the image", and a second action "Indicate the color of the cat". The vocabulary needs to be flexible enough to accommodate descriptions of complex tasks for humans.

Existing Approaches
PROV can be extended to encode a workflow-like pattern, following PROV recommendation of using hasPart, one can model sub-tasks as other PROV:Activities that compose a task.
There are several ontologies that have been designed for scientific workflows: P-Plan [1], OPMW [2], and SMARTProject [3]

[1] http://www.opmw.org/model/p-plan/
[2] http://www.opmw.org/
[3] https://bioportal.bioontology.org/ontologies/SP